I'd say the bigger issue in 2016 was the Russian interference, which has been proven and has lead to convictions: https://en.wikipedia.org/wiki/Russian_interference_in_the_20...

> Simultaneously, the Republican-led Senate and House Intelligence Committees conducted their own investigations into the Russians' activities. The Senate committee's report, released in five volumes between July 2019 and August 2020, found that the Russian government had engaged in an "extensive campaign" to sabotage the election in favor of Trump

I'm also curious how you think Cambridge Analytica was debunked. I don't see any mention of debunking on their wikipedia page, but I do see facebook being fined billions for it. https://en.wikipedia.org/wiki/Facebook%E2%80%93Cambridge_Ana...